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Finding the Fourth Proportional to 299,559,840.80, 449,339,761.20 and 247,603,719.20

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Solution

The fourth proportional to 299,559,840.80, 449,339,761.20 and 247,603,719.20 is: 371,405,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,559,840.80 : 449,339,761.20 = 247,603,719.20 : x
  2. Step 2: Convert to fraction form
    299,559,840.80/449,339,761.20 = 247,603,719.20/x
  3. Step 3: Cross multiply
    299,559,840.80x = 449,339,761.20 × 247,603,719.20
  4. Step 4: Simplify right side
    299,559,840.80x = 111,258,196,057,559,840
  5. Step 5: Solve for x
    x = 111,258,196,057,559,840/299,559,840.80
  6. Step 6: Final answer
    x = 371,405,578.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.